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Finding the Fourth Proportional to 3,465.10, 4,780.65 and 1,972.65

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Solution

The fourth proportional to 3,465.10, 4,780.65 and 1,972.65 is: 2,721.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,465.10 : 4,780.65 = 1,972.65 : x
  2. Step 2: Convert to fraction form
    3,465.10/4,780.65 = 1,972.65/x
  3. Step 3: Cross multiply
    3,465.10x = 4,780.65 × 1,972.65
  4. Step 4: Simplify right side
    3,465.10x = 9,430,549.22
  5. Step 5: Solve for x
    x = 9,430,549.22/3,465.10
  6. Step 6: Final answer
    x = 2,721.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.